What churned out killer cough syrup: Rusty machines, filthy floors; how 2,000sqft unit went unchecked for Times of IndiaThe deadly dose: Inside India’s cough syrup obsession BBCIndia flags testing lapses at pharma firms after cough syrups deaths ReutersCough syrup row: Fathers in MP battle to prove ‘killer syrup’ claimed their kids; rummaging trash, travel Times of IndiaIndia: 3 states ban cough syrup after several children die DW